L-3 Avionics Systems has found three more homes for its GH-3100 electronic standby instrument system (ESIS). The 3-ATI liquid-crystal electronic display provides altitude, attitude, airspeed and heading along with GPS, FMS and nav radio data as backup in the event of aircraft primary flight instrument failure.

The GH-3100 is to be standard fit on the re-introduced de Havilland DHC-6 Twin Otter from Canada’s Viking Air. The Twin Otter Series 400 will be an updated version of the legendary -300 series with more powerful engines, lighter weight composite components and a contemporary glass cockpit, for which first delivery is expected by next April.